JPS6219428A - Vent type extruding device - Google Patents
Vent type extruding deviceInfo
- Publication number
- JPS6219428A JPS6219428A JP60159748A JP15974885A JPS6219428A JP S6219428 A JPS6219428 A JP S6219428A JP 60159748 A JP60159748 A JP 60159748A JP 15974885 A JP15974885 A JP 15974885A JP S6219428 A JPS6219428 A JP S6219428A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- resin
- container
- conduit
- receiver
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/76—Venting, drying means; Degassing means
- B29C48/765—Venting, drying means; Degassing means in the extruder apparatus
- B29C48/766—Venting, drying means; Degassing means in the extruder apparatus in screw extruders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/76—Venting, drying means; Degassing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、脱気押出機のベントロより、溶融した樹脂を
取り出すようにした脱気押出装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a degassing extrusion device that takes out molten resin from a vent hole of a degassing extruder.
樹脂中に含まれる未反応モノマー、溶剤、副生成物等の
揮発性成分を除去することは、成形材料あるいは押出成
形品の製造において重要である。Removal of volatile components such as unreacted monomers, solvents, and by-products contained in resins is important in the production of molding materials or extrusion molded products.
現在、樹脂中に含まれる揮発性成分を除去するための装
置として、−軸もしくは多軸の脱気押出機が使用されて
いる。 ゛
しかしながら、樹脂から揮発性成分を除゛去するに使用
されるスクリュ式の脱気押出機の脱気 □は、通常
押出機のバレルにベント口を設け、こ □の部分を
真空系に接続して押出機内部の溶融樹脂を減圧下に曝し
て脱気するため、スクリュ表面上の溶融樹脂の一部が揮
発性成分に同伴してベントロ付近にはみ出してくるいわ
ゆるベントアップ現象が起る。Currently, a -screw or multi-screw degassing extruder is used as a device for removing volatile components contained in resin. However, the degassing □ of the screw-type degassing extruder used to remove volatile components from the resin is usually done by providing a vent port in the barrel of the extruder and connecting this □ part to the vacuum system. Since the molten resin inside the extruder is degassed by exposing it to a reduced pressure, a so-called vent-up phenomenon occurs in which a portion of the molten resin on the screw surface bulges out near the vent hole along with volatile components.
このように一旦ベントアップして付着した樹脂は、長時
間の加熱により変質し、スクリュにまき込まれる場合が
あり、これにより押出機内が汚染されることがしばしば
発生し、製品の品質を低下させる欠点がある。Once vented up and attached, the resin may deteriorate due to long-term heating and be drawn into the screw, which often contaminates the inside of the extruder and reduces product quality. There are drawbacks.
この欠点を改良する方法として、例えばベントアップし
た樹脂をベントロより押出機の外へ取り出す方法、ある
いは押出機に供給される樹脂の一部をベントロより連続
的又は定期的に抜取って、ベントロ付近にベントアップ
した樹脂を長時間付着滞留させず、また付着した樹脂を
押出機の外へ洗滌して取り出す方法等があげら゛れる。As a method to improve this drawback, for example, there is a method in which the vented resin is taken out of the extruder through the vent, or a part of the resin supplied to the extruder is continuously or periodically withdrawn from the vent, and the resin is removed from the vent. Examples of methods include not allowing the resin that has vented up to remain attached for a long time, and washing the attached resin out of the extruder to take it out.
しかし、上記の方法は、異物混入の少ない樹脂をうるよ
い方法であるが、高温、減圧下にあるベントロより溶融
した樹脂を押出機の外へ効率よく、また押出し製品を汚
染することなく連続的に取り出すことは困難であり、こ
れまでにこれらの方法を実施するための脱気押出装置は
□開発されていない。However, although the above method is a method for producing resin with less foreign matter contamination, it is efficient to transport the molten resin out of the extruder through a ventilator under high temperature and reduced pressure, and it can be carried out continuously without contaminating the extruded product. It is difficult to take out the □ and degassing extrusion equipment to carry out these methods has not been developed to date.
本発明は、上述した如き状況に鑑み、スクリュ式押出機
のベントロより、ベントアップした樹脂あるいは洗滌抜
取り用樹脂を効率よく、また押出様の運転を中断するこ
となく取り出すことのできる脱気押出装置を提供するこ
とにある。In view of the above-mentioned circumstances, the present invention has been devised as a degassing extrusion device that can efficiently take out vented-up resin or resin for washing and extraction from the vent hole of a screw type extruder without interrupting the extrusion-like operation. Our goal is to provide the following.
Ｌ問題点を解決するための手段〕
本発明の脱気押出装置は、ベント口を有するスクリュ式
の脱気押出機において、ベント口に溶融した樹脂を流下
させて取り出す導管を接続すると共に、さらに該導管に
開閉弁及び開閉可能な扉をもつ容器を順次配設したもの
よりなることを特徴とする。Means for Solving Problem L] The degassing extrusion device of the present invention is a screw type degassing extruder having a vent port, in which a conduit is connected to the vent port to allow the molten resin to flow down and taken out; It is characterized in that containers each having an on-off valve and a door that can be opened and closed are sequentially arranged in the conduit.
以下、本発明の脱気押出装置を図面に基づいて詳しく説
明する。Hereinafter, the degassing extrusion device of the present invention will be explained in detail based on the drawings.
第１図は本発明の実施の一例を示す一部切欠脱気押出装
置の正面図、第２図は第１図のＡ−Ａ′視要部拡大断面
図、第３図〜第４図は他のベントロの例を示す拡大断面
図を示している。図中、（１）はスクリュ式脱気押出装
置、（２）はバレル、（３）はスクリュ、（４）はベン
トロ、（５）は導管、（６）は開閉弁、（７）は開閉可
能な扉をもつ容器、（８）は溶融樹脂、（９）は受器、
（１０）は連通管、（１１）は透視性開閉扉、（１２）
ｌ Ｑ３）ｔ （２０）は弁、（１４）は排気口、（１
５）は樹脂供給口、（１６）はダイ、（１７）は駆動装
置、（１８）は透視窓、（１９）は圧力調節配管を示す
。FIG. 1 is a front view of a partially cut-out degassing extrusion device showing an example of the implementation of the present invention, FIG. 2 is an enlarged sectional view of the main part taken along line A-A' in FIG. 1, and FIGS. 3 to 4 are FIG. 7 shows an enlarged cross-sectional view of another example of a ventro. In the figure, (1) is a screw-type degassing extrusion device, (2) is a barrel, (3) is a screw, (4) is a vent hole, (5) is a conduit, (6) is an on-off valve, and (7) is an on-off valve. A container with a possible door, (8) is a molten resin, (9) is a receiver,
(10) is a communication pipe, (11) is a transparent opening/closing door, (12)
l Q3)t (20) is the valve, (14) is the exhaust port, (1
5) is a resin supply port, (16) is a die, (17) is a drive device, (18) is a see-through window, and (19) is a pressure adjustment pipe.
本発明の脱気押出装置は、従来のスクリュ式脱気押出機
に特定構造の樹脂取り出し処理装置を付設したもので、
第２図に示すように、ベントロ（４）に導管（５）、開
閉弁（６）及び側面に透視性開閉扉（１１）をもつ容器
（７１を順次連結させて連通ずるようにし、ベントロよ
りの溶融樹脂を導管（５）から容器（７）内に流下させ
るようにしたものである。The degassing extrusion device of the present invention is a conventional screw type degassing extruder equipped with a resin extraction processing device having a specific structure.
As shown in Fig. 2, a container (71) having a conduit (5), an on-off valve (6), and a transparent door (11) on the side is successively connected to the ventro (4) so that they communicate with each other. The molten resin is made to flow down from the conduit (5) into the container (7).
本発明の装置において、溶融樹脂を外部へ取り出すため
の導管（５）は、第１図〜第４図に示すように、押出機
のバレルに）の側面又は下側に設けられたベントロ（４
）の下側に設けられる。この導管（５）は、溶融樹脂を
流下させてベントロ（４）より取り出しうる位置及び構
造であれば特に限定されないが、好ましくはベント口に
近い位置に設けることが再加熱の必要なしに容易に流下
させうるのでよい。また導管（５）はベントロ（４）の
形状、大きさにより適宜選択出来、管状体のほか角状体
等いずれでもよい。In the apparatus of the present invention, the conduit (5) for taking out the molten resin to the outside is a vent hole (4) provided on the side or lower side of the extruder barrel (as shown in FIGS. 1 to 4).
). This conduit (5) is not particularly limited as long as it has a position and structure that allows the molten resin to flow down and be taken out from the vent hole (4), but it is preferably provided at a position close to the vent port so that it can be easily removed without the need for reheating. It is good because it can flow down. Further, the conduit (5) can be appropriately selected depending on the shape and size of the ventro (4), and may be of any shape such as a tubular body or a square body.
導管（５）に設ける開閉弁（６１はベントロ（４）と容
器（７）とを連通もしくは遮断させるものである。この
開閉弁（６）は溶融した樹脂をうまく流下させ、かつベ
ント内の真空を遮断できるものであれば特に限定されな
いが、コック、仕切弁等が好ましく使用できる。The on-off valve (61) provided in the conduit (5) is used to communicate or cut off the ventro (4) and the container (7). There are no particular limitations as long as it can shut off the flow, but cocks, gate valves, etc. can be preferably used.
容器（７）は、溶融流下した樹脂を受ける受器を収納さ
せておくためのものであり、容器（７）の−側面には容
器内が監視でき、かり受器（９）を出し入れできるよう
にした透視性開閉Ｎ （１１）が付設されている。The container (7) is for storing a receiver to receive the resin that has melted and flowed down, and there is a wall on the side of the container (7) so that the inside of the container can be monitored and the receiver (9) can be put in and taken out. A transparent opening/closing N (11) is attached.
受器（９）は、ベントロより流下する樹脂を受け、取り
出された樹脂を容器（７）より外へ取り出すためのもの
である。The receiver (9) is for receiving the resin flowing down from the vent hole and taking out the resin taken out from the container (7).
連通管（１０）は、ベントロ（４）と容器（７）とを連
通させるものであり、導管（５）及び開閉弁（６）の内
径が小さく、溶融樹脂で閉塞される場合に用いられる。The communication pipe (10) communicates the ventro (4) and the container (7), and is used when the inner diameter of the conduit (5) and the on-off valve (6) is small and is blocked by molten resin.
また受器（９）中の樹脂を取り出した後、容器（７）内
をベントロ（４）と同一圧力に調圧する場合にも用いら
れる。It is also used to adjust the pressure inside the container (7) to the same pressure as the ventro (4) after taking out the resin in the receiver (9).
ベントロ（４）は、本発明を実施できる構造であれば特
に限定されないが、第２図〜第４図に示すように、押出
機の側面又は下方に配置され、第１図〜第３図に示すよ
うにバレルの側面にベント口を有する場合には、ベント
ロの下側を水平あるいは下向きに傾斜させて樹脂の滞留
をできるだけなくすような方策をとるのがよい。ベント
ロの下側が水平である場合には、その水平部の長さを１
０ｍ以下とするのがよい。The vent hole (4) is not particularly limited as long as it has a structure that allows the present invention to be carried out, but as shown in FIGS. 2 to 4, it is placed on the side or below the extruder, and as shown in FIGS. When a vent port is provided on the side of the barrel as shown, it is preferable to make the lower side of the vent hole horizontal or slope downward to prevent resin from accumulating as much as possible. If the bottom of the ventro is horizontal, the length of the horizontal part is 1
It is better to set it to 0m or less.
またベントロの位置は、特に限定されず、樹脂原料の供
給口（１５）の前方もしくは後方のいずれの位置でもよ
く、１個もしくは２個以上の複数個を設けてもよい。Further, the position of the vent hole is not particularly limited, and may be located either in front of or behind the resin raw material supply port (15), and one or more vent holes may be provided.
本発明の装置におけるスクリュは一軸あるいは多軸のス
クリュのいずれも使用できる。The screw in the device of the present invention can be either a single screw or a multi-screw.
本発明の装置に用いる樹脂は、特に限定されず、未反応
単量体、溶剤、副生成物等の揮発性成分を７０重ｔ％以
下含有する塊状重合、溶液重合及び懸濁重合法等により
得られる熱可塑性樹脂の外、少量の揮発性成分を含有す
る樹脂の単独もしくは樹脂組成物等いずれでもよい。こ
の装置は、透明性樹脂、例えばメタクリル樹脂、スチレ
ン系樹脂等の脱気押出に特に有用である。The resin used in the apparatus of the present invention is not particularly limited, and is produced by bulk polymerization, solution polymerization, suspension polymerization, etc. containing 70% by weight or less of volatile components such as unreacted monomers, solvents, and by-products. In addition to the obtained thermoplastic resin, resins containing a small amount of volatile components may be used alone or in resin compositions. This apparatus is particularly useful for degassing extrusion of transparent resins, such as methacrylic resins, styrenic resins, and the like.
次に、本発明の装置の一操作法をベントアンプした樹脂
をベントロより外へ取り出す場合の一例について説明す
る。Next, an example of an operation method of the apparatus of the present invention in which vent-amplified resin is taken out from the vent hole will be described.
排気口（１４）により所定の圧に減圧されているベント
ロ（４）において、ベントアップが始まるとベントロの
外へ溶融した樹脂が出てくる。このベントアップ物を導
管（５）方へ流し出して、導管（５）及び開閉弁（６）
を通し、容器（７）内の受器（９）中に流下させる。When venting starts in the ventilator (4), which is reduced to a predetermined pressure by the exhaust port (14), molten resin comes out of the ventilator. This vent-up material is poured out toward the conduit (5), and the conduit (5) and the on-off valve (6) are
and flows down into the receiver (9) in the container (7).
導管（５）及び開閉弁（６）は、樹脂の流動性を保つた
め、あるいは向上させるために加熱する。加熱方法は、
図示していないが電気ヒータあるいは熱媒加熱あるいは
その他の方法のいずれでもよい。また容器（７）は凝縮
しない温度以上に加熱して容器内での凝縮を防ぐように
する。The conduit (5) and the on-off valve (6) are heated in order to maintain or improve the fluidity of the resin. The heating method is
Although not shown, an electric heater, heat medium heating, or other method may be used. Further, the container (7) is heated to a temperature above which condensation does not occur to prevent condensation within the container.
この状態を継続し、容器（７）の透視性開閉扉（Ｕ）よ
り受器（９）内の樹脂のたまり具合を監視する。This state is continued, and the accumulation of resin in the receiver (9) is monitored through the transparent opening/closing door (U) of the container (7).
受器（９）に樹脂がある程度たまった時点で、開閉弁（
６）及び弁（１２）を閉じ、弁（１３）を開放して容器
（７）内を常圧に戻し、扉（１１）を開けて、樹脂のた
まりた受器（９）を取り出すと共に、別の受器（９′）
を入れて閉じる。この操作を脱気押出装置の運転中くり
返す。When a certain amount of resin has accumulated in the receiver (9), close the on-off valve (
6) and the valve (12) are closed, the valve (13) is opened to return the inside of the container (7) to normal pressure, the door (11) is opened, and the receiver (9) in which the resin has accumulated is taken out. Another receiver (9')
Insert and close. This operation is repeated while the degassing extrusion device is in operation.
交換した受器（９）内への樹脂の流下は、弁（１３）を
閉じ、弁（１２）を開いて、容器（７）内の圧力をぺ゛
ントロ（４）と同一圧力に調圧した後、開閉弁（６１を
開くことにより行うことができる。なお容器＜ｉｔ内の
圧力調節は、圧力ａｍ配管（１９）及び弁（２０）で行
うこともできる。To flow the resin into the replaced receiver (9), close the valve (13) and open the valve (12) to adjust the pressure in the container (7) to the same pressure as in the pentro (4). After that, this can be done by opening the on-off valve (61).The pressure inside the container can also be adjusted using the pressure am piping (19) and the valve (20).
また、ベントロより、樹脂の一部を連続的又は定期的に
より取り出す場合には、押出条件を変更して積極的にベ
ントアップさせ、そのベントアップ物を上述の如き方法
で脱気押出装置の外へ取り出すことができる。In addition, if a part of the resin is continuously or periodically taken out from the vent hole, the extrusion conditions are changed to actively vent it, and the vented material is removed from the degassing extrusion equipment using the method described above. It can be taken out.
以上詳述した如き構造を有する本発明の脱気押出装置は
、樹脂中の揮発性成分な脱気すると共に、ベントロより
出る樹脂をうまく該装置の外へ取り出すことができるの
で、ベント部で発生する劣化し、着色した樹脂の製品中
への混入が顕著に低減され、きわめて品質のすぐれた樹
脂成形品をうろことができ、また樹脂をベントロより連
続的に取り出す運転方法の場合でも、押出機の運転停止
を不要にしζ長期連続運転を可能にすることができる。The degassing extrusion device of the present invention having the structure described in detail above can degas the volatile components in the resin, and can also successfully take out the resin coming out of the vent, so that no gas is generated at the vent part. The contamination of deteriorated and colored resin into the product is significantly reduced, and extremely high quality resin molded products can be produced. This eliminates the need to stop the operation of the system and enables long-term continuous operation.
第１図は本発明の実施の一例を示す一部切欠脱気押出装
置の正面図、第２図は第１図に示す装置のＡ −Ａ’視
要部拡大断面図、第３図及び第４図は他のベントロの例
を示す拡大断面図である。
（１）・・・スクリュ式脱気押出装置、（２）・・・バ
レル、（３）・・・スクリュ、（４）・・・ベントロ、
（５１−°°導管、（６）・・・開閉弁、（７１−°°
容器、（８１°°°溶融樹脂、（９）・・・受器、（ｉ
ｏ）・・・連通管、（Ｕ） ・・・透視性開閉扉、（１
２）、 （１３）、 （２ｏ）−＝弁、（１４）・・・
排気口、（１５）・・・樹脂供給口、（１６）・・・ダ
イ、（１７）・・・駆動装置、（１８）・・・透視窓、
（１９）・・・圧力調節配管。
特許出願人 三菱レイヨン株式会社代理人 弁理士
吉 沢 敏 夫 、）集１図
疎３図
犀、、！Ｕ！ＪFIG. 1 is a front view of a partially cut-out degassing extrusion device showing an example of the embodiment of the present invention, FIG. 2 is an enlarged sectional view of the main part of the device shown in FIG. FIG. 4 is an enlarged sectional view showing another example of a ventro. (1)...Screw type degassing extrusion device, (2)...Barrel, (3)...Screw, (4)...Ventro,
(51-°° conduit, (6)...on/off valve, (71-°°
Container, (81°°° molten resin, (9)...receiver, (i
o)...Communication pipe, (U)...Transparent opening/closing door, (1
2), (13), (2o)-=valve, (14)...
Exhaust port, (15)...Resin supply port, (16)...Die, (17)...Drive device, (18)...See-through window,
(19)...Pressure adjustment piping. Patent applicant: Mitsubishi Rayon Co., Ltd. Agent, Patent attorney: Toshio Yoshizawa, ) collection: 1 figure, 3 figures, rhinoceros,,! U! J
Claims (1)
、ベント口に溶融した樹脂を流下させて取り出す導管を
接続すると共に、さらに該導管に開閉弁及び開閉可能な
扉をもつ容器を順次配設してなる脱気押出装置。 ２、ベント口と開閉可能な扉をもつ容器の間に連通管を
配設し、その連通管に開閉弁及び開閉可能な扉をもつ容
器内の圧力を大気圧に解放するための開閉弁を付設した
ことを特徴とする特許請求の範囲第１項記載の脱気押出
装置。 ３、開閉可能な扉をもつ容器内の圧力を大気圧から真空
圧まで自由に調節できる配管系に付設してなる特許請求
の範囲第１項記載の脱気押出装置。 ４、開閉可能な扉をもつ容器内に、取り出し可能な溶融
した樹脂の受器を収納してなる特許請求の範囲第１項記
載の脱気押出装置。[Scope of Claims] 1. In a screw-type degassing extruder having a vent port, a conduit through which the molten resin flows down and is taken out is connected to the vent port, and the conduit is further provided with an on-off valve and a door that can be opened and closed. A degassing extrusion device consisting of containers arranged in sequence. 2. A communication pipe is installed between the vent port and the container with the door that can be opened and closed, and the communication pipe is equipped with an on-off valve and an on-off valve that releases the pressure inside the container with the door that can be opened and closed to atmospheric pressure. The degassing extrusion device according to claim 1, further comprising: a degassing extrusion device. 3. The degassing extrusion device according to claim 1, which is attached to a piping system that can freely adjust the pressure inside the container from atmospheric pressure to vacuum pressure with a door that can be opened and closed. 4. The degassing extrusion device according to claim 1, wherein a removable molten resin receiver is housed in a container having an openable/closable door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60159748A JPS6219428A (en) | 1985-07-19 | 1985-07-19 | Vent type extruding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60159748A JPS6219428A (en) | 1985-07-19 | 1985-07-19 | Vent type extruding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6219428A true JPS6219428A (en) | 1987-01-28 |
| JPH0211415B2 JPH0211415B2 (en) | 1990-03-14 |
Family
ID=15700404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60159748A Granted JPS6219428A (en) | 1985-07-19 | 1985-07-19 | Vent type extruding device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6219428A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0681920U (en) * | 1993-05-07 | 1994-11-25 | 株式会社トーヨーテクノコーポレーション | Pollution-free container |
| WO2001002467A1 (en) * | 1999-07-06 | 2001-01-11 | Teijin Limited | Apparatus and method for producing resin |
| CN102001171A (en) * | 2010-10-13 | 2011-04-06 | 常州丰盛光电科技股份有限公司 | Uninterrupted pollution discharge device and method for light guide plate (LGP) production system |
-
1985
- 1985-07-19 JP JP60159748A patent/JPS6219428A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0681920U (en) * | 1993-05-07 | 1994-11-25 | 株式会社トーヨーテクノコーポレーション | Pollution-free container |
| WO2001002467A1 (en) * | 1999-07-06 | 2001-01-11 | Teijin Limited | Apparatus and method for producing resin |
| US6562936B1 (en) | 1999-07-06 | 2003-05-13 | Teijin Limited | Apparatus and method for producing resin |
| CN102001171A (en) * | 2010-10-13 | 2011-04-06 | 常州丰盛光电科技股份有限公司 | Uninterrupted pollution discharge device and method for light guide plate (LGP) production system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0211415B2 (en) | 1990-03-14 |
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